** Changed in: oem-priority
Assignee: jeremyszu (os369510) => Dirk Su (dirksu)
** Description changed:
[Steps to reproduce]
1. Install 20.04.3 with "Third-party packages" on a system which containing a
RTD3 supported nvidia card.
2. After the installation, press enter to reboot system
3. prime-select query
[Expected result]
on-demand
[Actual result]
performance
---
It's because ubiquity launches `ubuntu-drivers install --packages-list
...` in live system but install each package to target storage.
When installing nvidia-prime, the preinst set "on" to "/etc/prime-
discrete" which will be referred by gpu-manager. The gpu-manager will
set to performance mode.
After confirming with Alberto on Mattermost, since we don't have a
nvidia driver which lower than 450 version since focal.
I think we are ok to switch to on-demand mode.
+ ---
+
+ [Impact]
+
+ * Ubuntu will set GPU mode to performance as default which may use more power
+ * User can't use GPU for other purpose (eg: deep-learning) if RTD3 is not
supported
+ * According to Nvidia README, the RTD3 doesn't support on non-laptop machine
+
+ [Test Plan]
+
+ * Install 20.04.3 with "Third-party packages". After the installation,
reboot the system. Execute "prime-select query" should get "on-demand"
+ * On non-laptop machine. Can set GPU mode to on-demand
+ * On laptop with GPU in runtime PM support list. Set GPU mode to on-demand
and Nvidia driver is loaded with "NVreg_DynamicPowerManagement=0x02"
+
+ [Where problems could occur]
+
+ * on-demand mode supported after nvidia driver 450. And focal does not have
nvidia driver lower than 450.
+ * With GPU supported RTD3 not able enable runtime PM on non-laptop. But
based on the Nvidia README, this case shall not happened.
+
+ [Other Info]
+
+ Changelogs:
+
+ nvidia-prime (0.8.16~0.20.04.2) focal; urgency=medium
+
+ [ Jeremy Szu ]
+ * Set on-demand mode as default nvidia mode (LP: #1942307)
+
+ [ Alberto Milone ]
+ * prime-select:
+ - Detect chassis type and enable RTD3 only
+ on laptops (LP: #1942788).
+ - on-demand mode doesn't need to depend on
+ RTD3 (LP: #1942789).
+ - Use bootvga detection when last_gfx_boot
+ is not available.
+ - Don't check the current profile when setting
+ a profile (LP: #1946476).
+ - Catch BrokenPipeError.
+ - Use bootvga detection when last_gfx_boot is
+ not available.
+
+ nvidia-prime (0.8.16.2~0.21.04.1) hirsute; urgency=medium
+
+ [ Jeremy Szu ]
+ * Set on-demand mode as default nvidia mode (LP: #1942307)
+
+ [ Alberto Milone ]
+ * prime-select:
+ - Detect chassis type and enable RTD3 only
+ on laptops (LP: #1942788).
+ - on-demand mode doesn't need to depend on
+ RTD3 (LP: #1942789).
+ - Use bootvga detection when last_gfx_boot
+ is not available.
+ - Don't check the current profile when setting
+ a profile (LP: #1946476).
+
X-HWE-Bug: Bug #1946434
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1942307
Title:
ubiquity uses performance mode for nvidia driver
To manage notifications about this bug go to:
https://bugs.launchpad.net/oem-priority/+bug/1942307/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
